1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Architecture specific mm hooks
 4 *
 5 * Copyright (C) 2015, IBM Corporation
 6 * Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
 7 */
 8
 9#ifndef _ASM_POWERPC_MM_ARCH_HOOKS_H
10#define _ASM_POWERPC_MM_ARCH_HOOKS_H
11
12static inline void arch_remap(struct mm_struct *mm,
13			      unsigned long old_start, unsigned long old_end,
14			      unsigned long new_start, unsigned long new_end)
15{
16	/*
17	 * mremap() doesn't allow moving multiple vmas so we can limit the
18	 * check to old_start == vdso_base.
19	 */
20	if (old_start == mm->context.vdso_base)
21		mm->context.vdso_base = new_start;
22}
23#define arch_remap arch_remap
24
25#endif /* _ASM_POWERPC_MM_ARCH_HOOKS_H */